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Learning game AI programming with Lua

You're reading from   Learning game AI programming with Lua Leverage the power of Lua programming to create game AI that focuses on motion, animation, and tactics

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Product type Paperback
Published in Nov 2014
Publisher Packt
ISBN-13 9781783281336
Length 352 pages
Edition 1st Edition
Languages
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Author (1):
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David Young David Young
Author Profile Icon David Young
David Young
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Table of Contents (16) Chapters Close

Learning Game AI Programming with Lua
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. Getting Started with AI Sandbox FREE CHAPTER 2. Creating and Moving Agents 3. Character Animations 4. Mind Body Control 5. Navigation 6. Decision Making 7. Knowledge Representation 8. Perception 9. Tactics Index

Group steering


Group steering can be broken down into three main steering behaviors: alignment, cohesion, and separation. An alignment steering force has the agent's face in the same forward direction as the rest of the agents in the group. Cohesion is a force that keeps the agents within the group together. Separation is the opposite of cohesion and forces the agents within the group to keep minimum distance from one another.

Using a combination of these three steering behaviors, which are also known as flocking, you can create groups of agents that are driven to move together yet not run into each other.

Alignment

To calculate a steering vector that will align our agent to a group of other agents, we can use the ForceToSeparate function.

local forceToAlign =
    agent:ForceToSeparate(maxDistance, maxAngle, agents);

Cohesion

To keep our agent together with a group of other agents, we can calculate a steering force for combining using the ForceToCombine function.

local forceToCombine =
    agent...
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